<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN""http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >Tools to analyse DNS traffic</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="PowerDNS manual" HREF="index.html"><LINK REL="PREVIOUS" TITLE="About PowerDNS.COM BV, 'the company'" HREF="powerdns-company-faq.html"><LINK REL="NEXT" TITLE="Backends in detail" HREF="backends-detail.html"></HEAD ><BODY CLASS="CHAPTER" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PowerDNS manual</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="powerdns-company-faq.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="backends-detail.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="CHAPTER" ><H1 ><A NAME="ANALYSIS" ></A >Chapter 19. Tools to analyse DNS traffic</H1 ><P > DNS is highly mission critical, it is therefore necessary to be able to study and compare DNS traffic. Since 2.9.18, PowerDNS comes with three tools to aid in analysis: <DIV CLASS="WARNING" ><P ></P ><TABLE CLASS="WARNING" WIDTH="100%" BORDER="0" ><TR ><TD WIDTH="25" ALIGN="CENTER" VALIGN="TOP" ><IMG SRC="../images/warning.gif" HSPACE="5" ALT="Warning"></TD ><TD ALIGN="LEFT" VALIGN="TOP" ><P > As of 2.9.18 these tools are somewhat rough - they have no help messages for example. They do work though. </P ></TD ></TR ></TABLE ></DIV > <P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT >dnsreplay pcapfile [ipaddress] [port number]</DT ><DD ><P > This program takes recorded questions and answers and replays them to a specified nameserver and reporting afterwards which percentage of answers matched, were worse or better. </P ></DD ><DT >dnswasher pcapfile output</DT ><DD ><P > Anonymises recorded traffic, making sure it only contains DNS, and that the originating IP addresses of queries are stripped, which may allow you to send traces to our company or mailing list without violating obligations towards your customers or privacy laws. </P ></DD ><DT >dnsscope pcapfile</DT ><DD ><P > Calculates statistics without replaying traffic </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="powerdns-company-faq.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="backends-detail.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >About PowerDNS.COM BV, 'the company'</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" > </TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Backends in detail</TD ></TR ></TABLE ></DIV ></BODY ></HTML >